CN102847743A - Manufacture method of pipe different in wall thickness - Google Patents
Manufacture method of pipe different in wall thickness Download PDFInfo
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- CN102847743A CN102847743A CN2012103535767A CN201210353576A CN102847743A CN 102847743 A CN102847743 A CN 102847743A CN 2012103535767 A CN2012103535767 A CN 2012103535767A CN 201210353576 A CN201210353576 A CN 201210353576A CN 102847743 A CN102847743 A CN 102847743A
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- wall thickness
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- thickness tube
- pipe different
- manufacture method
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Abstract
The invention discloses a manufacture method of a pipe different in wall thickness. The manufacture method comprises the following steps: manufacturing an opening component of the pipe different in wall thickness through a die, and then rolling the opening component of the pipe different in wall thickness, thus forming the pipe different in wall thickness. The manufacture method disclosed by the invention has relatively low cost, and the prepared pipe different in wall thickness can meet the strength of a car body, so that the weight of the car body can be reduced as far as possible, and the oil consumption is reduced.
Description
Technical field
The present invention relates to a kind of preparation method of pipe fitting, relate in particular to a kind of preparation method that does not wait wall thickness tube.
Background technology
The present main pipe fitting of being made by high-strength plate that adopts of the raw material of panel board for car bodies beam main pipe, body structure processing (such as the B post etc.), and high-strength plate is because yield strength is large, moulding is difficult, a lot of enterprises adopt the increase structure for reaching intensity, guarantee its intensity, so that tare increases.
In the research of body lightening, a kind of lightweight research for product is arranged---do not wait wall thickness tube.So-called do not wait wall thickness tube to refer to two or more different wall thickness occur at a pipe, and wherein one section be progressive thickness.
Have at present the report about unequal thickness plate, this unequal thickness plate can be used as the raw material that do not wait wall thickness tube, need to compress moulding to inner and outer plates during the roll moulding in the conventional roll extrusion tube-making process, but because not wait the pipe thickness of wall thickness tube be gradual change, the operation that inner and outer plates compresses moulding can cause damage to not waiting tube wall of wall thickness tube, this shows, does not wait wall thickness tube can not adopt conventional roll extrusion tube-making process.
Therefore, a kind of wall thickness tube preparation method that do not wait for unequal thickness plate of development is that those skilled in the art are devoted to one of direction of studying and solving.
Summary of the invention
The object of the invention is to overcome the defective of prior art and a kind of preparation method that does not wait wall thickness tube is provided.
The object of the present invention is achieved like this:
A kind of preparation method that does not wait wall thickness tube of the present invention may further comprise the steps:
S1: being that axial cross section is rounded with unequal thickness plate by mould molding does not ringently wait the wall thickness tube opening member, and its opened gap≤7mm;
S2: will not wait the wall thickness tube opening member by behind the four-pass roll at least, what obtain opened gap≤0.1mm, linearity requirement≤0.5mm does not wait the wall thickness tube semi-finished product;
S3: by gas laser, according to 2 m/mins speeds of welding the wall thickness tube semi-finished product that do not wait that step S2 obtains are welded;
S4: the product after above-mentioned welding finished obtains final products again by correcting wheel and material discharging wheel effect.
The inventive method adopts first mould molding to make and does not wait the wall thickness tube opening member, do not wait wall thickness tube will not waiting wall thickness tube opening member further can make by roll forming, the inventive method cost is lower, and what make does not wait wall thickness tube when satisfying bus body strength, can reduce tare as far as possible, reduce oil consumption.
The specific embodiment
Below in conjunction with embodiment, the invention will be further described.
The present invention does not wait the preparation method of wall thickness tube, may further comprise the steps:
S1: being that axial cross section is rounded with unequal thickness plate by mould molding does not ringently wait the wall thickness tube opening member, and its opened gap≤7mm;
S2: will not wait the wall thickness tube opening member by behind the four-pass roll at least, what obtain opened gap≤0.1mm, linearity requirement≤0.5mm does not wait the wall thickness tube semi-finished product;
S3: by gas laser, according to 2 m/mins speeds of welding the wall thickness tube semi-finished product that do not wait that step S2 obtains are welded;
S4: the product after above-mentioned welding finished obtains final products again by correcting wheel and material discharging wheel effect.
Above embodiment is only for explanation the present invention's, but not limitation of the present invention, person skilled in the relevant technique, in the situation that do not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (1)
1. preparation method that does not wait wall thickness tube may further comprise the steps:
S1: being that axial cross section is rounded with unequal thickness plate by mould molding does not ringently wait the wall thickness tube opening member, and its opened gap≤7mm;
S2: will not wait the wall thickness tube opening member by behind the four-pass roll at least, what obtain opened gap≤0.1mm, linearity requirement≤0.5mm does not wait the wall thickness tube semi-finished product;
S3: by gas laser, according to 2 m/mins speeds of welding the wall thickness tube semi-finished product that do not wait that step S2 obtains are welded;
S4: the product after above-mentioned welding finished obtains final products again by correcting wheel and material discharging wheel effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103535767A CN102847743A (en) | 2012-09-20 | 2012-09-20 | Manufacture method of pipe different in wall thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103535767A CN102847743A (en) | 2012-09-20 | 2012-09-20 | Manufacture method of pipe different in wall thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102847743A true CN102847743A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103535767A Pending CN102847743A (en) | 2012-09-20 | 2012-09-20 | Manufacture method of pipe different in wall thickness |
Country Status (1)
| Country | Link |
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| CN (1) | CN102847743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338782A (en) * | 2013-07-30 | 2015-02-11 | 宝山钢铁股份有限公司 | Processing method of welded tube with wall having different thicknesses |
| CN105108458A (en) * | 2015-09-08 | 2015-12-02 | 云南建工钢结构有限公司 | Method for manufacturing unequal thickness steel pipe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4603806A (en) * | 1983-08-11 | 1986-08-05 | Nippon Steel Corporation | Method of manufacturing metal pipe with longitudinally differentiated wall thickness |
| JPH0732049A (en) * | 1993-07-14 | 1995-02-03 | Nippon Steel Corp | Formation of uoe steel pipe |
| CN1347771A (en) * | 2001-07-13 | 2002-05-08 | 昌德机电(天津)有限公司 | Metal shell making process |
| CN1456400A (en) * | 2002-05-07 | 2003-11-19 | 泰尔茂株式会社 | Metal tube and its manufacturing method |
| CN1662342A (en) * | 2002-04-16 | 2005-08-31 | 本田技研工业株式会社 | Method of manufacturing annular body |
| CN102078888A (en) * | 2010-12-27 | 2011-06-01 | 中国二十二冶集团有限公司 | Method for manufacturing steel pipe with long round section |
| CN102266884A (en) * | 2011-07-25 | 2011-12-07 | 江苏华阳金属管件有限公司 | Thick-wall straight tube joint technology |
| CN102407246A (en) * | 2010-09-26 | 2012-04-11 | 上海月月潮钢管制造有限公司 | Method for manufacturing high-strength bridge steel tube |
-
2012
- 2012-09-20 CN CN2012103535767A patent/CN102847743A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4603806A (en) * | 1983-08-11 | 1986-08-05 | Nippon Steel Corporation | Method of manufacturing metal pipe with longitudinally differentiated wall thickness |
| JPH0732049A (en) * | 1993-07-14 | 1995-02-03 | Nippon Steel Corp | Formation of uoe steel pipe |
| CN1347771A (en) * | 2001-07-13 | 2002-05-08 | 昌德机电(天津)有限公司 | Metal shell making process |
| CN1662342A (en) * | 2002-04-16 | 2005-08-31 | 本田技研工业株式会社 | Method of manufacturing annular body |
| CN1456400A (en) * | 2002-05-07 | 2003-11-19 | 泰尔茂株式会社 | Metal tube and its manufacturing method |
| CN102407246A (en) * | 2010-09-26 | 2012-04-11 | 上海月月潮钢管制造有限公司 | Method for manufacturing high-strength bridge steel tube |
| CN102078888A (en) * | 2010-12-27 | 2011-06-01 | 中国二十二冶集团有限公司 | Method for manufacturing steel pipe with long round section |
| CN102266884A (en) * | 2011-07-25 | 2011-12-07 | 江苏华阳金属管件有限公司 | Thick-wall straight tube joint technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104338782A (en) * | 2013-07-30 | 2015-02-11 | 宝山钢铁股份有限公司 | Processing method of welded tube with wall having different thicknesses |
| CN105108458A (en) * | 2015-09-08 | 2015-12-02 | 云南建工钢结构有限公司 | Method for manufacturing unequal thickness steel pipe |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |